Liara (Acanthocoryphus) axinis, Bian & Zhang & Li, 2022

Bian, Xun, Zhang, Qianwen & Li, Shan, 2022, First report of the genus Liara (Orthoptera: Tettigoniidae: Conocephalinae Agraeciini) from Guangxi, China with description of two new species, Zootaxa 5195 (2), pp. 171-178 : 171-174

publication ID	https://doi.org/ 10.11646/zootaxa.5195.2.6
publication LSID	lsid:zoobank.org:pub:EB8181E9-356B-47CD-8E5B-407F3704592B
DOI	https://doi.org/10.5281/zenodo.7184775
persistent identifier	https://treatment.plazi.org/id/D23DC82C-FF83-FF97-F3AD-305AFB74FB81
treatment provided by	Plazi
scientific name	Liara (Acanthocoryphus) axinis
status	sp. nov.

Treatment

Liara (Acanthocoryphus) axinis sp. nov.

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Figures 1–4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 , 7A–C View FIGURE 7 , 8D–E View FIGURE 8 .

Description. Male. Body robust. Wings reaching the middle area of fourth abdominal tergite. Frons punctured. Fastigium verticis about one and a half times as long as scape, narrowing, upcurved, then its apical half directing forward; dorsal and ventral surfaces with median carinula, dorsal surface with a large tubercle at top near base ( Fig. 1E View FIGURE 1 ); apex subacute.

Pronotum rugose, anterior margin in middle faintly convex, posterior margin truncate, transverse sulcus only indicated ( Fig. 1C View FIGURE 1 ); the lateral lobes longer than deep with anterior angle obtusely angular, posterior angle obtusely rounded, humeral sinus indistinct ( Fig. 1E View FIGURE 1 ). Prosternum smooth; mesosternal lobes with basal areas separated, the internal margins straight, the external margins widened, then terminating to apex, apical areas long and stout, apices obtuse; metasternal lobes short with the external margins convex at basal areas, apices obtuse; intermedial plate with 1 pair of small obtuse tubercles at posterior angles ( Fig. 1F View FIGURE 1 ).

Fore coxae with 1 small spine; fore femora with 2–3 internal spines on ventral surfaces; tibiae ventrally with 6 internal spines, 2–3 external spines and 1 pair of apical spurs. Middle femora with 3–4 external spines on ventral surfaces; tibiae ventrally with 1–2 internal and 7 external spines, apices with 1 pair of ventral spurs. Hind femora ventrally with 7 external spines; tibiae with 10 internal spines, 4–5 external spines and 1 pair of apical spurs on dorsal surfaces, ventral surfaces with 2–3 internal spines, 7–8 external spines, 1 pair of subapical spurs and 2 pairs of apical spurs. Genicular lobes of hind femora with a small spine on both sides ( Fig. 1H–I View FIGURE 1 ).

Tenth abdominal tergite projecting backwards, posterior margin widely rounded but almost truncate in middle and concave along the midline ( Fig. 2B View FIGURE 2 ). Epiproct triangularly rounded with shallow medial furrow. Paraprocts with a pair of short tubercles. Cerci stout, apical half with two branches: dorsal branch hatchet-shaped ( Fig. 2C View FIGURE 2 ), ventral branch spine-shaped ( Fig. 2C View FIGURE 2 ). Basal areas of titillators slightly sclerotized, arcuately curved, directing aside ( Fig. 7A View FIGURE 7 ); middle parts obviously expanded ( Fig. 7B View FIGURE 7 ), then terminating into an acute spine, its tip directing outwards ( Figs. 2C View FIGURE 2 , 7C View FIGURE 7 ). Subgenital plate longer than wide with basal are broad, the lateral margins curved dorsad and narrowing to apex, posterior margin with triangular concavity; styli cylindrical, inserted at apico-lateral angles of subgenital plate ( Fig. 2G View FIGURE 2 ).

Female. Fore femora with 2–3 internal spines on ventral surfaces; tibiae ventrally with 6–7 internal and 0–4 external spines. Middle femora ventrally with 4 external spines; tibiae with 2 internal and 8 external spines on ventral surfaces. Hind femora with 4–7 external spines on ventral surfaces; tibiae with 9–11 internal and 3–5 external spines on dorsal surfaces, ventral surfaces with 3 internal and 6–8 external spines. The other spines as male.

Tenth abdominal tergite with posterior margin slightly concave in middle ( Fig. 4D View FIGURE 4 ). Epiproct triangular, apex rounded ( Fig. 4D View FIGURE 4 ). Cerci conical, apices slightly curved mediad. Subgenital plate trapezoidal in ventral view, posterior margin truncate, the apical angles prolonged into a long spine ( Fig. 4E–F View FIGURE 4 ). Ovipositor scythe-shaped, gradually curved upward with both margins expanding to middle area, then terminating to apices ( Fig. 4C View FIGURE 4 ); apices acute ( Fig. 4C View FIGURE 4 ).

Coloration. Body yellowish brown. Fastigium verticis and ventral margins of antennal cavities black; labrum reddish; mandibles black ( Figs. 1A View FIGURE 1 , 3A–B View FIGURE 3 ); eyes black. Pronotal disc with brownish lateral bands which deeper at anterior and posterior margins ( Figs. 1C View FIGURE 1 , 3D View FIGURE 3 ). Basal areas of mesosternal and metasternal lobes black ( Figs. 1F View FIGURE 1 , 3F View FIGURE 3 ). Basal and apical areas of fore tibiae with black rings ( Figs. 1G View FIGURE 1 , 3G View FIGURE 3 ). Middle and hind tibiae with blackish spots. Dorsal surfaces of abdominal tergites with black median band. Tegmina with dark spots.

Measurements (mm). Male: BL 25.8, PL 8.7, HFL 12.8, TL 11.1; Female: BL 28.5–30.1, PL 8.0–8.2, HFL 13.0–14.1, TL 10.4–10.5, OvL 12.7–13.1.

Material examined. Holotype: male, Shengtangshan, Jinxiu , Guangxi, July 31, 2022, coll. by Qianwen Zhang and Shan Li . Paratypes: 1 female, the other information as holotype; 1 female, Hekou, Jinxiu , Guangxi, July 25, 2022, coll. by Qianwen Zhang and Shan Li .

Distribution. Guangxi (Jinxiu).

Discussion. The new species differs from its relative, Liara (Acanthocoryphus) durata , in: fastigium verticis and ventral margins of antennal cavities black ( Figs. 1A View FIGURE 1 , 3A–B View FIGURE 3 ), fastigium verticis about one and a half times as long as scape ( Figs. 1A View FIGURE 1 , 3A–B View FIGURE 3 ); mesosternal and metasternal lobes black with longer apical area ( Figs. 1F View FIGURE 1 , 3F View FIGURE 3 ); basal areas of titillators of male phallus slightly sclerotized.